Detachable tread for pneumatic tires.



L. Y. C. HAAS. DBTAGHABLB TREAD FOR PNBUMATIC TIRES. APPLICATION FILED MANS, 1911` 1,090, l 45. Patented Mar. 17, 1914K WITNESSES INVENTOR UNITED sTATEs PATENT OFFICE.

LUDWIG F. C. HAS, 0F LANCASTER, PENNSYLVANIA..

DETACHABLE TREAD FOR PNEUMATIC TIRES. Y

specification of Letters Patent.

Application tiled May 13,' 1911.

Patented Mar. 17, 1914.

Serial No. 626,990.

which is intended to prevent puncture, blowouts, etc., and to prolong the life of the tire.

The object of the invention is to provide a tread, that while it is detachable, shall be so secured upon the tire thatit becomes a semi-permanent protector.

Another object of the invention being to produce a tread that shall be flexible, and at the same time be closely enough 'woven to deflect nails and other pointed objects.

Still another object of the invention is to construct a tread that shall be durable, cheap and elicient; be easily applied and repaired or removed.

With these and other objects in view, my invention consists in certain construction and combination of parts as will hereinafter be fully described and claimed in the annexed specification and illustrated in the accompanying drawi which form apart of this application an in which like figures ofreference refer to corresponding arts in all of the views; but it is fully un erstood that while I have here described my invention as shown, that I do not confine myself to the exact design, as slight changes may be made in the construction and arrangement of the several parts without departing from the spirit of the invention.

In the drawings z-Figure 1, is a pers ective view of a portion of a tire and w eel shown in section, and with my device aplied thereto. Fig. 2, shows another form of link. Fi 3, shows still another form of link, as o" Figs. 4, and 5.

Referring t0 the drawings.;-The usual pneumatic tire is indicated by the numeral l, the wheel rim by 2, and the spokes by 3.

As shown in Fig. l, the detachable tread comprises the links 4, which are lapped upon each other and held together by the cross or wearing links 5. Such of said wearing links 5, as come upon the center or tread of the tire are provided with the case hardened or otherwise treated knobs or heads 6; and as shown in Figs. 2, 3, 4, 5, these heads may be of various forms, such as the plate 8, as

shown in Fig. 4 which binds two or more links 5, together, or the knobs 9, and 10, shown in Figs. 2 and`3.

The links are substantially flat and in cross section resemble an S and an inverted S joined together. The lower bends of the links pass through an opening in a plate 28 which thus prevents the ends from spreading. It will be noticed that by my construction there is no wear and tear on the tread of the tire as the lower ortions of the links afford a flat bearing sur ace against the same, and that there are no joints on the upper surfaces of the links that could be spread by the strain put upon them.

For retaining the device upon the tire 1, there is provided the binder or attaching cable 11, which is threaded through the outer links 5, upon each side of the tire; each cable 11, making two complete wraps, and having its ends extending outside of the links for a short distance and secured together by a turnbuckle or other securing means. which may be readily loosened to remove the tread, and yet securely hold the links down back of the securing portion.

lVhile I have only illustrated a portion of the tread, it is understood that the same extends entirely around the wheel and is endless.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is A tread for automobile tires providin a seriesof substantially flat links, resemblmg in cross section an S and inverted S consaid links Vresenting a substantially at 10 nected together, plates provided with an bearing sur ace to the tire.

opening for engagmg the lower bends of the In testimon whereof I ax my signature links vherebylr the latter re prevented rokn; in presence o two Witnesses.

spi-ea mg, ates secure on varlous in Y to form thl tread, means for connecting LUDWIG F' C' HAAS' said links together and cables threaded for Witnesses:

adjustment through the outer links whereby JOHN J. THOMPSON,

the whole device may be tightened on a tire, MABEL L. LEFEVRE. 

